The role of NSAIDs in pain management

Nonsteroidal anti-inflammatory drugs (NSAIDs)1 are effective analgesics for pain with an inflammatory component. They are used for acute nociceptive pain and cancer pain, and have a limited role in the management of chronic noncancer pain. NSAIDs are ineffective for neuropathic and nociplastic pain.

NSAIDs can cause significant adverse effects (see Significant cardiovascular, gastrointestinal and renal adverse effects of NSAIDs). Before initiating an NSAID, consider patient factors, drug factors and the indication for use, and ensure potential benefits of NSAID use outweigh potential harms.
  • NSAID adverse effects are more likely in patients with certain comorbidities (eg renal impairment, cardiovascular disease, active peptic ulcer disease).
  • NSAID adverse effects are more likely with higher doses or prolonged use. Individual NSAIDs differ in their potential to cause specific adverse effects.
  • There are few reasons to avoid NSAIDs in acute pain because adverse effects are less likely with short-term use (ie less than 5 days) and the benefits of therapy are greater.
  • The potential for adverse effects is increased when NSAIDs are used longer term for chronic pain, so additional caution is warranted. Prescribers should consider both the recommendations in this topic and those in Considerations for NSAID use in the Rheumatology guidelines.

For specific precautions and contraindications to NSAID use, see Cardiovascular adverse effects of NSAIDs, Gastrointestinal adverse effects of NSAIDs, Renal adverse effects of NSAIDs, NSAIDs and postoperative recovery, Potential effects of NSAID use on conception and Potential harms of NSAID use during pregnancy.

Avoid nonselective NSAIDs in patients with NSAID-exacerbated respiratory disease.

Table 1. Significant cardiovascular, gastrointestinal and renal adverse effects of NSAIDs

[NB1]

System

Adverse effects

Comments

cardiovascular

increased blood pressure

fluid retention

myocardial infarction

stroke

cardiovascular death

NSAIDs can be used short term (up to 5 days) for acute pain in patients with CVD or at high risk of CVD—except postoperatively in patients who have had cardiac surgery

NSAIDs should not be used for chronic pain in patients with CVD or at high risk of CVD

celecoxib, ibuprofen or naproxen may be preferred

gastrointestinal

upper abdominal pain

gastric erosions

gastrointestinal ulceration (eg oesophageal, gastric, duodenal)

gastrointestinal bleeding

gastrointestinal perforation

NSAIDs should not be used in people with active peptic ulcer disease or gastrointestinal bleeding

limit NSAID use for acute pain to 5 days to reduce the risk of gastrointestinal toxicity

compared to nonselective NSAIDs, COX-2–selective NSAIDs (eg celecoxib, etoricoxib) are less likely to cause gastrointestinal toxicity, provided aspirin is not used concurrently

renal

acute or chronic renal impairment

NSAIDs should not be used in people with an eGFR less than 30 mL/minute

additionally, in acute pain, NSAIDs should not be used in people at risk of haemodynamic instability who have an eGFR less than 80 mL/minute, or who have postoperative or posttraumatic haemodynamic instability

celecoxib may be preferred

Note:

COX-2 = cyclo-oxygenase-2; CVD = cardiovascular disease; eGFR = estimated glomerular filtration rate; NSAID = nonsteroidal anti-inflammatory drug

NB1: Older people are at greater risk of NSAID-related adverse effects; assess their need for NSAID therapy carefully.

Limit the use of intravenous parecoxib to patients who are unable to take oral medications or who have biliary or renal colic. It is the consensus of the Pain and Analgesia Expert Group that repeat doses of intravenous ketorolac should be avoided because of ketorolac’s unfavourable adverse effect profile—gastrointestinal ulceration can occur within 5 days of ketorolac use.

1 Nonsteroidal anti-inflammatory drugs (NSAIDs) are categorised as nonselective inhibitors of cyclo-oxygenase (COX) or selective inhibitors of COX-2 (also known as coxibs).Return